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Before contest
Codeforces Round 941 (Div. 1)
28:44:52
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Before contest
Codeforces Round 941 (Div. 2)
28:44:52
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→ Filter Problems
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2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
constructive algorithms
data structures
dfs and similar
divide and conquer
dp
dsu
expression parsing
fft
flows
games
geometry
graph matchings
graphs
greedy
hashing
implementation
interactive
math
matrices
meet-in-the-middle
number theory
probabilities
schedules
shortest paths
sortings
string suffix structures
strings
ternary search
trees
two pointers
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Custom test
Problems
#
Name
4A
Watermelon
brute force
,
math
800
x479342
71A
Way Too Long Words
strings
800
x352019
231A
Team
brute force
,
greedy
800
x297872
282A
Bit++
implementation
800
x234879
158A
Next Round
*special problem
,
implementation
800
x231579
50A
Domino piling
greedy
,
math
800
x227803
263A
Beautiful Matrix
implementation
800
x223634
112A
Petya and Strings
implementation
,
strings
800
x208272
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x197353
281A
Word Capitalization
implementation
,
strings
800
x195243
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x192296
791A
Bear and Big Brother
implementation
800
x177924
266A
Stones on the Table
implementation
800
x177208
617A
Elephant
math
800
x169305
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x166742
59A
Word
implementation
,
strings
800
x161209
977A
Wrong Subtraction
implementation
800
x154148
110A
Nearly Lucky Number
implementation
800
x141866
734A
Anton and Danik
implementation
,
strings
800
x139363
41A
Translation
implementation
,
strings
800
x134278
116A
Tram
implementation
800
x131527
677A
Vanya and Fence
implementation
800
x129943
271A
Beautiful Year
brute force
800
x126973
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x126276
1030A
In Search of an Easy Problem
implementation
800
x119310
467A
George and Accommodation
implementation
800
x113271
344A
Magnets
implementation
800
x111216
486A
Calculating Function
implementation
,
math
800
x108880
136A
Presents
implementation
800
x108661
200B
Drinks
implementation
,
math
800
x107287
61A
Ultra-Fast Mathematician
implementation
800
x103216
228A
Is your horseshoe on the other hoof?
implementation
800
x101491
705A
Hulk
implementation
800
x99035
1328A
Divisibility Problem
math
800
x92850
469A
I Wanna Be the Guy
greedy
,
implementation
800
x90965
520A
Pangram
implementation
,
strings
800
x89349
144A
Arrival of the General
implementation
800
x88639
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x86809
996A
Hit the Lottery
dp
,
greedy
800
x83849
443A
Anton and Letters
constructive algorithms
,
implementation
800
x83549
785A
Anton and Polyhedrons
implementation
,
strings
800
x81809
268A
Games
brute force
800
x80605
1335A
Candies and Two Sisters
math
800
x78343
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x77609
510A
Fox And Snake
implementation
800
x76578
427A
Police Recruits
implementation
800
x72148
1352A
Sum of Round Numbers
implementation
,
math
800
x71478
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x70529
155A
I_love_\%username\%
brute force
800
x70373
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x70371
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x66960
581A
Vasya the Hipster
implementation
,
math
800
x66883
1154A
Restoring Three Numbers
math
800
x66128
151A
Soft Drinking
implementation
,
math
800
x65435
1742A
Sum
implementation
800
x64117
1399A
Remove Smallest
greedy
,
sortings
800
x62484
1409A
Yet Another Two Integers Problem
greedy
,
math
800
x62274
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x62117
630A
Again Twenty Five!
number theory
800
x61616
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x59935
1512A
Spy Detected!
brute force
,
implementation
800
x59633
1692A
Marathon
implementation
800
x59311
32B
Borze
expression parsing
,
implementation
800
x58411
1676A
Lucky?
implementation
800
x57615
758A
Holiday Of Equality
implementation
,
math
800
x57023
472A
Design Tutorial: Learn from Math
math
,
number theory
800
x56826
1669A
Division?
implementation
800
x56660
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56474
1560A
Dislike of Threes
implementation
800
x55631
1807A
Plus or Minus
implementation
800
x55264
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55258
1367A
Short Substrings
implementation
,
strings
800
x54659
1791A
Codeforces Checking
implementation
,
strings
800
x54528
1343B
Balanced Array
constructive algorithms
,
math
800
x53502
703A
Mishka and Game
implementation
800
x53376
1760A
Medium Number
implementation
,
sortings
800
x53195
9A
Die Roll
math
,
probabilities
800
x52290
431A
Black Square
implementation
800
x51202
1850A
To My Critics
implementation
,
sortings
800
x50624
1374A
Required Remainder
math
800
x50432
1367B
Even Array
greedy
,
math
800
x50081
1624A
Plus One on the Subset
math
800
x49591
1520A
Do Not Be Distracted!
brute force
,
implementation
800
x49457
80A
Panoramix's Prediction
brute force
800
x49296
1433A
Boring Apartments
implementation
,
math
800
x49116
1915A
Odd One Out
bitmasks
,
implementation
800
x49032
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x48555
1873A
Short Sort
brute force
,
implementation
800
x48270
1551A
Polycarp and Coins
greedy
,
math
800
x48197
1619A
Square String?
implementation
,
strings
800
x48059
1360A
Minimal Square
greedy
,
math
800
x47876
1353B
Two Arrays And Swaps
greedy
,
sortings
800
x47414
1472B
Fair Division
dp
,
greedy
,
math
800
x47301
1722A
Spell Check
implementation
800
x46547
492A
Vanya and Cubes
implementation
800
x46520
1283A
Minutes Before the New Year
math
800
x46355
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x46294
1535A
Fair Playoff
brute force
,
implementation
800
x46126
707A
Brain's Photos
implementation
800
x46031
1360B
Honest Coach
greedy
,
sortings
800
x45917
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